Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 19:44
Static task
static1
Behavioral task
behavioral1
Sample
52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe
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Size
336KB
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MD5
ec147176eeac4184773575fe3c7c11b5
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SHA1
347ba1f5559668925547b7851207f8280f31549e
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SHA256
52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae
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SHA512
0410cfcaa11a787fc7424166ed3a4b7870ad72d3e82a92835991256ead55c7a6a781971945103f538732d60e15e40f664ee224a32bee014900213f1f5ed6bc5a
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SSDEEP
6144:mygkzvh+RltuYb4NEzrVCU8TCOqHaC6Y6EX+mnqcXZWgbp1GOJ:cIYRltF4NEzrVCU8Tzq6C6Y6EX+mqcX9
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rnfah.exe -
Executes dropped EXE 1 IoCs
pid Process 4872 rnfah.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe -
Adds Run key to start application 2 TTPs 58 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /d" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /y" rnfah.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /o" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /u" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /l" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /g" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /f" rnfah.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /m" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /a" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /x" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /a" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /u" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /l" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /j" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /k" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /r" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /o" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /t" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /h" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /x" rnfah.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /h" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /z" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /r" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /w" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /n" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /k" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /v" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /q" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /i" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /s" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /e" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /t" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /p" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /c" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /d" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /g" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /j" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /m" 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /e" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /n" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /y" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /q" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /p" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /f" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /i" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /a" 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /b" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /c" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /m" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /s" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /v" rnfah.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /w" rnfah.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /z" rnfah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rnfah = "C:\\Users\\Admin\\rnfah.exe /b" rnfah.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe 4872 rnfah.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 4872 rnfah.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1484 wrote to memory of 4872 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 82 PID 1484 wrote to memory of 4872 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 82 PID 1484 wrote to memory of 4872 1484 52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe"C:\Users\Admin\AppData\Local\Temp\52d3c27a1d45d085de931fe907d0da448bc7449d1536794f8a21427514c813ae.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1484 -
C:\Users\Admin\rnfah.exe"C:\Users\Admin\rnfah.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4872
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
336KB
MD5053d36e79f57f248211927e5d56612ea
SHA13250e9eb47b7d28298417709004b8b96644ac54d
SHA25649dd97ada547c01bae796230dbaeaef737f869bc5f642c68115a21e01ffab171
SHA512c5a4a6c9f5a1192eba6686b1c86cb9d77b4c1bd436464259b0f2539314a4cc1df94cb9abc70813e6396e74d508e66614a80c92bc193340c3c0b9d9db6cad147e
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Filesize
336KB
MD5053d36e79f57f248211927e5d56612ea
SHA13250e9eb47b7d28298417709004b8b96644ac54d
SHA25649dd97ada547c01bae796230dbaeaef737f869bc5f642c68115a21e01ffab171
SHA512c5a4a6c9f5a1192eba6686b1c86cb9d77b4c1bd436464259b0f2539314a4cc1df94cb9abc70813e6396e74d508e66614a80c92bc193340c3c0b9d9db6cad147e